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TypeScript Enums

Beginner ~15 min read

Enums (enumerations) allow you to define a set of named constants. They make code more readable and maintainable by giving meaningful names to numeric or string values.

Numeric Enums

Numeric enums auto-increment from 0 by default:

Output 
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String Enums

String enums use string values instead of numbers:

Output 
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Const Enums

Const enums are completely removed during compilation for better performance:

Output 
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Exercise: Status System

Task: Create an order status system using enums!

Output 
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Summary

  • Numeric enums auto-increment from 0
  • String enums use explicit string values
  • Const enums are inlined at compile time
  • Enums improve code readability

What's Next?

Next, we'll explore Special Types like any, unknown, void, and never!

Previous ← Arrays & Tuples
Next Special Types →